package com.example.forum.controller;

import com.example.forum.common.AppResult;
import com.example.forum.common.ResultCode;
import com.example.forum.config.AppConfig;
import com.example.forum.model.User;
import com.example.forum.services.IUserService;
import com.example.forum.utils.MD5Util;
import com.example.forum.utils.StringUtil;
import com.example.forum.utils.UUIDUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: liuli
 * Date: 2024-08-11
 * Time: 18:00
 */
@Slf4j
@RestController
@RequestMapping("/user")
//对controller进行api接口的描述
@Api(tags = "用户接口")
public class UserController {

    @Resource
    private IUserService userService;


    /**
     *
     * @param username 用户名
     * @param nickname 用户昵称
     * @param password 密码
     * @param passwordRepeat 确认密码
     * @return
     */

    @ApiOperation("用户注册")
    @PostMapping("/register")
     public AppResult register(@ApiParam("用户名") @RequestParam("username") @NonNull String username,
                               @ApiParam("用户昵称") @RequestParam("nickname") @NonNull String nickname,
                               @ApiParam("用户密码") @RequestParam("password") @NonNull String password,
                               @ApiParam("确认密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat){

//        if(StringUtil.isEmpty(username) || StringUtil.isEmpty(nickname) || StringUtil.isEmpty(password)
//        || StringUtil.isEmpty(passwordRepeat)){
//            //传统参数检验方式：返回错误信息，controller层不抛异常，services会抛
//            return  AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE);
//        }
//
        //检验密码与确认密码相同
        if(!password.equals(passwordRepeat)){
            log.warn(ResultCode.FAILED_TWO_PWD_NOT_SAME.toString());
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }

        //准备数据
        User user = new User();
        user.setUsername(username);
        user.setNickname(nickname);

        //处理密码
        //1.生成盐
        String salt = UUIDUtil.UUID_32();
        //2.生成密码的密文
        String  encryptPassword = MD5Util.md5Salt(password,salt);
        //3.设置密码和盐
        user.setPassword(encryptPassword);
        user.setSalt(salt);

        //调用service层的方法
        userService.createNormalUser(user);
        //返回成功
         return  AppResult.success();
     }

    /**
     * 用户登录
     * @param username 用户名
     * @param password 密码
     * @return
     */
    
    @ApiOperation("用户登录")
    @PostMapping("/login")
    public AppResult login (HttpServletRequest request,
                            @ApiParam("用户名") @RequestParam("username") @NonNull String username,
                            @ApiParam("密码") @RequestParam("password") @NonNull String password){
        //1. 调用service中的登录方法，返回user对象
        User user = userService.login(username, password);
        if(user == null){
            log.warn(ResultCode.FAILED_LOGIN.toString());
            return  AppResult.failed(ResultCode.FAILED_LOGIN);
        }
        //2.如果登录成功，把user设置到session作用域中
        HttpSession session = request.getSession(true);
        session.setAttribute(AppConfig.USER_SESSION,user);
        //3. 返回结果
        return  AppResult.success();
    }

    @ApiOperation("获取用户信息")
    @GetMapping("/info")
    public AppResult<User> getUserInfo (HttpServletRequest request,
                                        @ApiParam("用户Id") @RequestParam(value = "id",required = false) Long id){
       //定义返回的user对象
        User user = null;
        //根据id的值判断user对象的获取方式
        if(id == null) {
            //1. 如果id为空，从session中获取当前用户的登录信息
            HttpSession session = request.getSession(false);

            //从session中获取当前登录的用户信息
            user = (User) session.getAttribute(AppConfig.USER_SESSION);
        }else {
            //2.如果id不为空，从数据库中按id查询出用户信息
            user = userService.selectById(id);
        }
        //判断用户是否为空
        if(user == null){
            return AppResult.failed(ResultCode.FAILED_USER_NOT_EXISTS);
       }
        //返回正常的错误
        return  AppResult.success(user);
    }


    @ApiOperation("退出登录")
    @GetMapping("/logout")
    public AppResult logout(HttpServletRequest request){

        //获取session对象

        HttpSession session = request.getSession(false);
        //判断session是否有效
        if(session != null){
            //打印日志
            log.info("退出成功！");
            //表示用户在登陆状态，直接销毁session
            session.invalidate();

        }
        return AppResult.success("退出成功！");
    }



    /**
     * 修改个⼈信息
     * @param username ⽤⼾名
     * @param nickname 昵称
     * @param gender 性别
     * @param email 邮箱
     * @param phoneNum 电话号
     * @param remark 个⼈简介
     * @return AppResult
     */
    @ApiOperation("修改个⼈信息")
    @PostMapping("/modifyInfo")
    public AppResult modifyInfo (HttpServletRequest request,
                                 @ApiParam("⽤户名") @RequestParam(value = "username",required = false) String username,
                                 @ApiParam("昵称") @RequestParam(value = "nickname",required = false) String nickname,
                                 @ApiParam("性别") @RequestParam(value = "gender",required = false) Byte gender,
                                 @ApiParam("邮箱") @RequestParam(value = "email",required = false) String email,
                                 @ApiParam("电话号") @RequestParam(value = "phoneNum",required = false) String phoneNum,
                                 @ApiParam("个⼈简介") @RequestParam(value = "remark",required = false) String remark){


        // 1. 接收参数
        // 2. 对参数做⾮空校验（全部都为空，则返回错误描述）
        if (StringUtil.isEmpty(username) && StringUtil.isEmpty(nickname)
                && StringUtil.isEmpty(email) && StringUtil.isEmpty(phoneNum)
                && StringUtil.isEmpty(remark) && gender == null) {
            // 返回错误信息
            return AppResult.failed("请输⼊要修改的内容");
        }
            // 从session中获取⽤户Id
            HttpSession session = request.getSession(false);
            User user = (User) session.getAttribute(AppConfig.USER_SESSION);
            // 3. 封装对象
            User updateUser = new User();
            updateUser.setId(user.getId()); // ⽤户Id
            updateUser.setUsername(username); // ⽤户名
            updateUser.setNickname(nickname); // 昵称
            updateUser.setGender(gender); // 性别
            updateUser.setEmail(email); // 邮箱
            updateUser.setPhoneNum(phoneNum); // 电话
            updateUser.setRemark(remark); // 个人简介
            // 4. 调⽤Service中的⽅法
            userService.modifyInfo(updateUser);
            // 5. 查询最新的⽤户信息
            user = userService.selectById(user.getId());
            // 6. 把最新的⽤户信息设置到session中
            session.setAttribute(AppConfig.USER_SESSION, user);
            // 7. 返回结果

            return AppResult.success(user);
       }



    @ApiOperation("修改密码")
    @PostMapping("/modifyPwd")
    public AppResult modifyPassword (HttpServletRequest request,
                                     @ApiParam("原密码") @RequestParam("oldPassword") @NonNull String oldPassword,
                                     @ApiParam("新密码") @RequestParam("newPassword") @NonNull String newPassword,
                                     @ApiParam("确认密码") @RequestParam("passwordRepeat") @NonNull String passwordRepeat) {
        // 1. 校验新密码与确认密码是否相同
        if (!newPassword.equals(passwordRepeat)) {
            // 返回错误描述
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }
        // 2. 获取当前登录的用户信息
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        // 3. 调用Service
        userService.modifyPassword(user.getId(), newPassword, oldPassword);
        // 4. 销毁session
        if (session != null) {
            session.invalidate();
        }
        // 5. 返回结果
        return AppResult.success();
    }




}
